Mitsubishi Hyper Heat Explained: Cold Climate Ductless Heating in New England

HVAC expert James Smithell explains how Mitsubishi Hyper Heat systems differ from standard heat pumps and why they perform well in cold climates like New England. Hyper Heat models maintain full heating capacity down to around 5°F to -5°F, making them suitable for many homes without relying on fossil fuel heating. The conversation covers how the systems work in extreme cold, the role of defrost cycles, and when backup heat may still be recommended for older or drafty homes. Smithell also emphasizes the importance of proper Manual J load calculations and correct system sizing to ensure efficient performance and avoid issues like short cycling.